SQL> update test_table set attribute1 = '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890' where attribute1 = 'AAAAA';1 row updated.SQL> commit;Commit complete.SQL> alter system checkpoint;System altered.We can now see that :-
1. the block SCNs and sequence have been updated2. the block CheckSum has been updated3. the Available Space in the block has decreased4. the record that previously started at byte 8176 has now moved to byte 8066 to allow it to grow.